Health Canada is considering changing the rules on selling and labelling children's cold medications that have been linked to serious complications and at least three deaths among children under the age of two between 1995 and 2007, according to confidential documents obtained by CBC News under federal Access to Information laws.

Between 1995 and 2007, there were 145 cases of reactions, 92 that were considered serious — including two infants who died from an accidental overdose, and a third infant who had a complicated medical history and was taking other drugs.

It is wrong to conclude that the medications don't work, which is why the pharmaceutical industry is sponsoring clinical trials in which cough and cold medications will be tested in children, said Gerry Harrington, director of public affairs for the Nonprescription Drug Manufacturers Association of Canada.